2000 Pontiac SSEi stumbles and misfires?

Hi guys
I have a 200 Pontiac Bonneville SSEi which was running perfect before I
parked it on my front lawn and went on my holidays for 2 weeks, I had to

park it there because my driveway was filled with fill. When I came back and
started it it had a noticeable stumble upon acceleration and a loss of
power, it is even more noticeable when I corner right or left then it really
bogs down. I put some methyl hydrate and injector cleaner in the new tank of
gas to see if it was moisture in the tank maybe, but this had no effect. Any
ideas? could it need a new fuel filter? is there a small one on the engine
maybe. Any help would be welcome. Also another unrelated problem :-) after
coming back from Vegas with 4 adults in the car plus luggage the rear of the
car is a lot higher now than it should be, it looks like a hot car and the
suspension pump keeps regulating it to that height, ideas? some sensor
busted I'm sure someplace.
Thanks
Les.

Well, I would guess the obvious and say either fuel filter or injectors. It
seems odd that injectors could go bad that quickly without prior problems.
There's always the possibility that something was put in your fuel tank
while you were away if it was accessible outside. Although it's a pain for
radio station settings and so forth, you could disconnect the battery for 10
minutes and go back to the original factory default computer settings.
There's an outside chance this could help with the second problem you
mention.
Lee

Do you have a habbit of driving around on fumes?
AKA less than 1/4 of a tank?
Sounds kinda like a failing fuel pump.
The fuel filter is a 30k mile item.
The rear load level sensor is attatched to the suspension arm, left rear
(2000 & up). Sometimes it gets detatched.

Hi Guys
Well I finally figured out what the hell was wrong with my car, this I hope
may help other 2000 Pontiac SSEi owners to help prevent their houses
catching on fire if they park the car in the garage. The reason the car was
stumbling and misfiring was caused by a little plastic pipe connected to the
underside of the supercharger where it could get nice and hot and eventually
after a number of years get brittle and crack and leak fuel onto the hot
manifold and catch fire. I came out of my local coffee shop, started the
engine and then saw the smoke, had to use my morning coffee and a lot more
cups of water to put out the fire. I have since learned that this is an all
to common fault with these supercharged V6's of this and later years, I was
sent an article from a website http://www.baileycar.com/burn_baby.html that
may help shed some light on it. oh yes thanks for the tip regarding the
battery disconnection, it fixed the rear suspension, took itself a week to
come down again :-)
Best Regards
Les.
says...

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